<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<link rel="stylesheet" href="css/bootstrap.css" />
		<script src="js/jquery-3.2.1.min.js"></script>
		<script src="js/bootstrap.js"></script>
	</head>
	<body>
		<button class="btn btn-success">登录</button>
	</body>
</html>